Had an incident at my local airport today. I work operations and was called out by the tower to the runway for FOD - when I got there it was a dead Cattle Egret that was in several pieces - just recognized it as the type because of the white feathers with some golden brown feathers on the largest section that was intact. It was a brand new fresh kill and the only two aircraft operating at the time were a Falcon 50 that landed and a Challenger 600 that departed. I saw a group of egrets flying away when the Falcon 50, but after meeting with the Falcon 50 pilot and we inspected the plane we didn't find any sign of a bird strike or ingestion. The tower contacted the Challenger that was on a long haul flight about the possibility of a bird strike, but the pilot was unaware.
Challengers have a high bypass ratio jet engine, so is it possible that it could ingest a bird the size of a Cattle egret with a Challenger- not a small bird by any means, the smallest of the American egrets but larger than a typical song bird or a crow - but I believe the bones are less dense than that of a crow - and not notice anything wrong with the plane while flying?